In this paper, the cause of mortar baseplate breakage was analyzed by diving into cross-section, material, process, and design aspects. As a result of observing the fracture surface and non-fracture suface using optical equipment, it was possible to confirm changes in the shape of disconnected line and metal surface at a specific area. In addition, a number of linear defects due to overlap were found. Flow analysis was performed using the Deform program to verify changes during the production process. According to the result, a drop test was performed on each of the lap detection baseplate, undetection baseplate, and removed product to verify the presumptive cause of the rupture of the poplite.

In the early 1960s, US Air Force lost missile launch bases during ICBM development by a defect in the missile design and operation plan. U.S. DoD realized the limitation of the existing accident prevention method. Therefore, the weapon development required system safety activity, and procurement projects of U.S. DoD applied MIL-STD-882(System Safety). Development projects of U.S. DoD more emphasized the importance of system safety after the space shuttle Challenger exploded in 1986. Currently, Airworthiness certification for military aircraft uses system safety to minimize accidents. The domestic defense aviation R&D projects also use the system safety for the airworthiness certification. However, non-aviation weapon R&D projects rarely applied system safety. This paper presents a system safety application method for domestic weapon R&D projects by studying the U.S. military standards/organizations and domestic defense aviation projects.

It is difficult to apply the ram target value setting methods of the conventional weapon system to a large combined weapon system such as a submarine. The current study presents the case of weapon system development and suggests a new way to improve the setting and verification methods of ram target value of the submarine through critical review of the case. The submarine, unlike other weapon system, has an operating environment, which reaches all over the world, and its operating and maintenance conditions are different from others. Therefore, the ram target value of the submarine should be set and verified on the basis of mission essential equipment and mission critical equipment, not of all the constituent components.

The private sector is currently reviewing the feasibility of the project or deciding economic policies by analyzing the economic ripple effects. However, the arms acquisition project focuses on the need for the national defense weapons system by analyzing the costs and the effectiveness of the analysis and reviewing the necessity and feasibility of the project. In order to analyze the economic ripple effects, KB (the Bank of Korea) prepares and publishes an analysis table of industrial associations in a given unit. IAAR (the industrial association analysis report) is difficult to apply directly to the defense weapons system. Therefore, research on the economic ripple effects applicable to the defense arms procurement project was needed. In this study, we propose the generic methodology for estimating economical and technical ripple effects resulted in acquiring new weapon systems. Based on the analysis of inter-industrial relations, economical ripple effects are estimated with production inducing effects, value-induced effects, employment-induced effects and export-induced effects. Also, the technological ripple effects are estimated with technological intensity represented by investment cost in research and development. To show the validity of proposed methodology, a case study of acquiring new weapon systems such as GR (guided rocket), destroyer, and helicopter is accomplished. From the case study, it is concluded that these economical & technological ripple effects can be used as a reference to decision making in the course of acquiring major future defense weapons systems.

The navy that operates a large size of weapon systems, relatively a small quantity of, in order to minimize the loss of war potential caused by the breakdown of weapon system during long-term naval area of operation assigns allowance parts such as Maintenance Float (M/F), Combat Exchange Components, Concurrent Spare Parts (CSP) and so on to each unit and makes them use the allowance parts. Among them, Combat Exchange Components is being calculated in accordance with heuristic method because there is no standardized method to calculate it differently from Maintenance Float and Concurrent Spare Parts. In this article, more systematic calculation optimization method of it is suggested by selecting the optimum Combat Exchange Components in accordance with integer programming and presenting it, comparing it with the list of Combat Exchange Components calculated by actual heuristic method.

과학기술의 발달과 함께 무기체계도 과거 공상 과학영화나 만화에서 볼 수 있었던 것들이 현실로 나타나고 있다. 그중에서도 자율무기체계의 발전은 인류에게 또 다른 재앙이 될 것이라는 견해가 있는가 하면 무기의 정확성과 인간보다 우월한 물리적, 감정적 능력을 통해 무력충돌로 인한 인명과 재산의 손실을 줄일 수 있어 인간에 대한 인권과 생명보호에 더욱 중요한 역할을 할 것이라고 보는 견해가 대립하고 있다. 자율무기체계란 무엇인지, 어느 범위까지 자율 무기체계로 볼 수 있으며, 국제법상 자율무기체계 에 대해 확립된 개별조약이나 국가 사이의 관행이 없는 상황에서 인간의 통제가 작동하지 않는 자율 무기체계의 개발에 대해 기존 국제법으로 이를 규율할 수 있는지를 먼저 살펴본다. 기존 국제법이 적용 가능하다고 할 경우 자율 무기의 기본적인 특성과 자율무기 사용에 대한 찬반론의 견해 대립을 확인한 후에 자율무기의 사용이 국제인도법상의 비례성의 원칙, 구별의 원칙, 기사도의 원칙에 위배되지 않는지 구체적으로 검토한다. 또한 국제인도법에 위반되는 행위가 발생 한 경우 사용을 지시한 지휘관의 책임이나 손해배상 책임에 대해 살펴본다. 마지막으로 자율무기체계가 가장 발달한 미국의 인공지능을 이용한 자율무기체계의 개발현황 과 법령의 규정을 확인하고 유럽, 러시아, 중국, 일본, 북한 등의 국가에서 개발 중인 자율무기체 계를 살펴본 후 우리나라의 자율무기체계와 비교 함으로써 장래 과학기술 및 경제발전과 인구감소 로 인한 병력의 부족문제를 해결할 수 있는 자율 무기체계 개발 필요성에 대해 살펴본다.

The recent development of modern weapon system by SOS (System of System) has required users to have more exact decision making. It is possible to achieve the control of complex weapon system more efficiently and effectively by increasing usability. Accordingly, many studies on graphical display have been conducted for several years in the field of HCI (Human Computer Interaction) and GUI (Graphic User Interface), starting from its design stage. Therefore, this paper focuses on evaluating the system GUI usability and analyzing several important points based on performance model, which is a tool for the evaluation and the improvement of service quality. Performance Model, the main focus of this study, reflects user expectations (which is defined as user importance in this paper). The study consists of four steps. First, 34 checklists are drawn from the existing studies related to GUI usability evaluation by using a heuristic method, and then the checklists are matched with 11 weapon system design factors. Next, the study evaluates the importance of GUI element and the usability of weapon system “A” with the checklists twice respectively. Third, the performance of user importance (Pi) and the performance of usability (Pu) are calculated by modifying a numerical formula for normalization in this step. Finally, the study compares the approach it takes and the existing usability evaluation method, demonstrating that there is a significant difference between the two methods as a result. In addition, 4 improvement factors are suggested for weapon system “A” as “Shortcut” and “Description of Abbreviation,” and so on. Although it is necessary to conduct more studies for higher reliability and validity of the results, this study is meaningful considering it takes a new point of view.

Currently, cost estimation is very important to the government acquisition programs to support decisions about funding and to evaluate resource requirement as key decision points. Parametric cost estimating models have been used extensively to obtain appr

국방무기체계 연구개발 사업은 타 사업 분야보다 많은 사업적 위험요소를 안고 있다. 현대 무기체계의 첨단화, 복합화 추세는 개발기간의 장기화, 사업의 대형화, 개발비용의 상승화의 요인이 되고 있으며, 기술적인 불확실성에 대한 위험요소도 더욱 확대되고 있다. 이러한 필요성으로 국방 분야에 과학적 사업관리를 위한 EVMS를 도입하여 다양하게 적용시키고 있으며 그 효용성도 점차로 증대되어가고 있는 추세이다. 그러나 이러한 개선 노력에도 불구하고 여전히 무기체계 획득의 성공적 구비조건은 아직 불충분하다고 할 수 있다. 따라서 본 연구에서는 문헌 연구와 사례연구, 설문 분석을 통하여 추진되고 있는 무기체계 개발의 EVMS 적용실태와 문제점을 과학적 기법(EVMS)의 도입 본래의 목적과 취지에 부합하기 위한 프로젝트 관리(Project Management)측면에서 분석하여 효율적 사업관리를 수행할 수 있는 발전방안을 제시하고자 한다.